Frozen shoulder is also called frozen shoulder, there is no fixed which side of the pain, which side of the onset of which side of the shoulder joint pain, if both sides of the shoulder joint at the same time onset, can cause bilateral shoulder joint pain, the side with more serious injury will be more obvious pain. Frozen shoulder is a kind of aseptic inflammatory disease of soft tissues around the shoulder joint, with typical symptoms of shoulder pain and limited shoulder activities, which can develop unilaterally or bilaterally at the same time, and during the onset of the disease, the shoulder joint can have limited active and passive activities. Frozen shoulder is mostly caused by chronic degenerative diseases, long-term over-activity and poor posture, etc. For treatment, attention should be paid to rest, and functional training of shoulder joint should be carried out every day, focusing on flexion-extension-rotation and adduction-abduction activities. If the diagnosis of frozen shoulder is confirmed, patients are advised to actively cooperate with the doctor for standardized treatment and rehabilitation training.